86349839 has 2 divisors, whose sum is σ = 86349840. Its totient is φ = 86349838.

The previous prime is 86349833. The next prime is 86349841. The reversal of 86349839 is 93894368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86349839 - 2²⁰ = 85301263 is a prime.

Together with 86349841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86349833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43174919 + 43174920.

It is an arithmetic number, because the mean of its divisors is an integer number (43174920).

Almost surely, 2^86349839 is an apocalyptic number.

86349839 is a deficient number, since it is larger than the sum of its proper divisors (1).

86349839 is an equidigital number, since it uses as much as digits as its factorization.

86349839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 86349839 is about 9292.4614069686. The cubic root of 86349839 is about 441.9982101714.

The spelling of 86349839 in words is "eighty-six million, three hundred forty-nine thousand, eight hundred thirty-nine".